Pileus Git - ~andy/gtk/blob - gtk/gtklistitem.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19 #include "gtklabel.h"
  20 #include "gtklistitem.h"
  21 #include "gtklist.h"
  22
  23 static void gtk_list_item_class_init    (GtkListItemClass *klass);
  24 static void gtk_list_item_init          (GtkListItem      *list_item);
  25 static void gtk_list_item_realize       (GtkWidget        *widget);
  26 static void gtk_list_item_size_request  (GtkWidget        *widget,
  27                                          GtkRequisition   *requisition);
  28 static void gtk_list_item_size_allocate (GtkWidget        *widget,
  29                                          GtkAllocation    *allocation);
  30 static void gtk_list_item_draw          (GtkWidget        *widget,
  31                                          GdkRectangle     *area);
  32 static void gtk_list_item_draw_focus    (GtkWidget        *widget);
  33 static gint gtk_list_item_button_press  (GtkWidget        *widget,
  34                                          GdkEventButton   *event);
  35 static gint gtk_list_item_expose        (GtkWidget        *widget,
  36                                          GdkEventExpose   *event);
  37 static gint gtk_list_item_focus_in      (GtkWidget        *widget,
  38                                          GdkEventFocus    *event);
  39 static gint gtk_list_item_focus_out     (GtkWidget        *widget,
  40                                          GdkEventFocus    *event);
  41 static void gtk_real_list_item_select   (GtkItem          *item);
  42 static void gtk_real_list_item_deselect (GtkItem          *item);
  43 static void gtk_real_list_item_toggle   (GtkItem          *item);
  44
  45
  46 static GtkItemClass *parent_class = NULL;
  47
  48
  49 GtkType
  50 gtk_list_item_get_type (void)
  51 {
  52   static GtkType list_item_type = 0;
  53
  54   if (!list_item_type)
  55     {
  56       GtkTypeInfo list_item_info =
  57       {
  58         "GtkListItem",
  59         sizeof (GtkListItem),
  60         sizeof (GtkListItemClass),
  61         (GtkClassInitFunc) gtk_list_item_class_init,
  62         (GtkObjectInitFunc) gtk_list_item_init,
  63         /* reserved_1 */ NULL,
  64         /* reserved_2 */ NULL,
  65         (GtkClassInitFunc) NULL,
  66       };
  67
  68       list_item_type = gtk_type_unique (gtk_item_get_type (), &list_item_info);
  69     }
  70
  71   return list_item_type;
  72 }
  73
  74 static void
  75 gtk_list_item_class_init (GtkListItemClass *class)
  76 {
  77   GtkWidgetClass *widget_class;
  78   GtkItemClass *item_class;
  79
  80   widget_class = (GtkWidgetClass*) class;
  81   item_class = (GtkItemClass*) class;
  82
  83   parent_class = gtk_type_class (gtk_item_get_type ());
  84
  85   widget_class->realize = gtk_list_item_realize;
  86   widget_class->size_request = gtk_list_item_size_request;
  87   widget_class->size_allocate = gtk_list_item_size_allocate;
  88   widget_class->draw = gtk_list_item_draw;
  89   widget_class->draw_focus = gtk_list_item_draw_focus;
  90   widget_class->button_press_event = gtk_list_item_button_press;
  91   widget_class->expose_event = gtk_list_item_expose;
  92   widget_class->focus_in_event = gtk_list_item_focus_in;
  93   widget_class->focus_out_event = gtk_list_item_focus_out;
  94
  95   item_class->select = gtk_real_list_item_select;
  96   item_class->deselect = gtk_real_list_item_deselect;
  97   item_class->toggle = gtk_real_list_item_toggle;
  98 }
  99
 100 static void
 101 gtk_list_item_init (GtkListItem *list_item)
 102 {
 103   GTK_WIDGET_SET_FLAGS (list_item, GTK_CAN_FOCUS);
 104 }
 105
 106 GtkWidget*
 107 gtk_list_item_new (void)
 108 {
 109   return GTK_WIDGET (gtk_type_new (gtk_list_item_get_type ()));
 110 }
 111
 112 GtkWidget*
 113 gtk_list_item_new_with_label (const gchar *label)
 114 {
 115   GtkWidget *list_item;
 116   GtkWidget *label_widget;
 117
 118   list_item = gtk_list_item_new ();
 119   label_widget = gtk_label_new (label);
 120   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 121
 122   gtk_container_add (GTK_CONTAINER (list_item), label_widget);
 123   gtk_widget_show (label_widget);
 124
 125   return list_item;
 126 }
 127
 128 void
 129 gtk_list_item_select (GtkListItem *list_item)
 130 {
 131   gtk_item_select (GTK_ITEM (list_item));
 132 }
 133
 134 void
 135 gtk_list_item_deselect (GtkListItem *list_item)
 136 {
 137   gtk_item_deselect (GTK_ITEM (list_item));
 138 }
 139
 140
 141 static void
 142 gtk_list_item_realize (GtkWidget *widget)
 143 {
 144   g_return_if_fail (widget != NULL);
 145   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 146
 147   if (GTK_WIDGET_CLASS (parent_class)->realize)
 148     (* GTK_WIDGET_CLASS (parent_class)->realize) (widget);
 149
 150   gdk_window_set_background (widget->window,
 151                              &widget->style->base[GTK_STATE_NORMAL]);
 152 }
 153
 154 static void
 155 gtk_list_item_size_request (GtkWidget      *widget,
 156                             GtkRequisition *requisition)
 157 {
 158   GtkBin *bin;
 159
 160   g_return_if_fail (widget != NULL);
 161   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 162   g_return_if_fail (requisition != NULL);
 163
 164   bin = GTK_BIN (widget);
 165
 166   requisition->width = (GTK_CONTAINER (widget)->border_width +
 167                         widget->style->klass->xthickness) * 2;
 168   requisition->height = GTK_CONTAINER (widget)->border_width * 2;
 169
 170   if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
 171     {
 172       gtk_widget_size_request (bin->child, &bin->child->requisition);
 173
 174       requisition->width += bin->child->requisition.width;
 175       requisition->height += bin->child->requisition.height;
 176     }
 177 }
 178
 179 static void
 180 gtk_list_item_size_allocate (GtkWidget     *widget,
 181                              GtkAllocation *allocation)
 182 {
 183   GtkBin *bin;
 184   GtkAllocation child_allocation;
 185
 186   g_return_if_fail (widget != NULL);
 187   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 188   g_return_if_fail (allocation != NULL);
 189
 190   widget->allocation = *allocation;
 191   if (GTK_WIDGET_REALIZED (widget))
 192     gdk_window_move_resize (widget->window,
 193                             allocation->x, allocation->y,
 194                             allocation->width, allocation->height);
 195
 196   bin = GTK_BIN (widget);
 197
 198   if (bin->child)
 199     {
 200       child_allocation.x = (GTK_CONTAINER (widget)->border_width +
 201                             widget->style->klass->xthickness);
 202       child_allocation.y = GTK_CONTAINER (widget)->border_width;
 203       child_allocation.width = allocation->width - child_allocation.x * 2;
 204       child_allocation.height = allocation->height - child_allocation.y * 2;
 205
 206       gtk_widget_size_allocate (bin->child, &child_allocation);
 207     }
 208 }
 209
 210 static void
 211 gtk_list_item_draw (GtkWidget    *widget,
 212                     GdkRectangle *area)
 213 {
 214   GtkBin *bin;
 215   GdkRectangle child_area;
 216
 217   g_return_if_fail (widget != NULL);
 218   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 219   g_return_if_fail (area != NULL);
 220
 221   if (GTK_WIDGET_DRAWABLE (widget))
 222     {
 223       bin = GTK_BIN (widget);
 224
 225       if (!GTK_WIDGET_IS_SENSITIVE (widget))
 226         gtk_style_set_background (widget->style, widget->window, GTK_STATE_INSENSITIVE);
 227       else if (widget->state == GTK_STATE_NORMAL)
 228         gdk_window_set_background (widget->window,
 229                                    &widget->style->base[GTK_STATE_NORMAL]);
 230       else
 231         gtk_style_set_background (widget->style, widget->window, widget->state);
 232
 233       gdk_window_clear_area (widget->window, area->x, area->y,
 234                              area->width, area->height);
 235
 236       if (bin->child && gtk_widget_intersect (bin->child, area, &child_area))
 237         gtk_widget_draw (bin->child, &child_area);
 238
 239       gtk_widget_draw_focus (widget);
 240     }
 241 }
 242
 243 static void
 244 gtk_list_item_draw_focus (GtkWidget *widget)
 245 {
 246   GdkGC *gc;
 247
 248   g_return_if_fail (widget != NULL);
 249   g_return_if_fail (GTK_IS_LIST_ITEM (widget));
 250
 251   if (GTK_WIDGET_DRAWABLE (widget))
 252     {
 253       if (GTK_WIDGET_HAS_FOCUS (widget))
 254         gc = widget->style->black_gc;
 255       else if (!GTK_WIDGET_IS_SENSITIVE (widget))
 256         gc = widget->style->bg_gc[GTK_STATE_INSENSITIVE];
 257       else if (widget->state == GTK_STATE_NORMAL)
 258         gc = widget->style->base_gc[GTK_STATE_NORMAL];
 259       else
 260         gc = widget->style->bg_gc[widget->state];
 261
 262       gdk_draw_rectangle (widget->window, gc, FALSE, 0, 0,
 263                           widget->allocation.width - 1,
 264                           widget->allocation.height - 1);
 265     }
 266 }
 267
 268 static gint
 269 gtk_list_item_button_press (GtkWidget      *widget,
 270                             GdkEventButton *event)
 271 {
 272   g_return_val_if_fail (widget != NULL, FALSE);
 273   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 274   g_return_val_if_fail (event != NULL, FALSE);
 275
 276   if (event->type == GDK_BUTTON_PRESS)
 277     if (!GTK_WIDGET_HAS_FOCUS (widget))
 278       gtk_widget_grab_focus (widget);
 279
 280   return FALSE;
 281 }
 282
 283 static gint
 284 gtk_list_item_expose (GtkWidget      *widget,
 285                       GdkEventExpose *event)
 286 {
 287   GtkBin *bin;
 288   GdkEventExpose child_event;
 289
 290   g_return_val_if_fail (widget != NULL, FALSE);
 291   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 292   g_return_val_if_fail (event != NULL, FALSE);
 293
 294   if (GTK_WIDGET_DRAWABLE (widget))
 295     {
 296       bin = GTK_BIN (widget);
 297
 298       if (!GTK_WIDGET_IS_SENSITIVE (widget))
 299         gdk_window_set_background (widget->window, &widget->style->bg[GTK_STATE_INSENSITIVE]);
 300       else if (widget->state == GTK_STATE_NORMAL)
 301         gdk_window_set_background (widget->window, &widget->style->base[GTK_STATE_NORMAL]);
 302       else
 303         gdk_window_set_background (widget->window, &widget->style->bg[widget->state]);
 304
 305       gdk_window_clear_area (widget->window, event->area.x, event->area.y,
 306                              event->area.width, event->area.height);
 307
 308       if (bin->child)
 309         {
 310           child_event = *event;
 311
 312           if (GTK_WIDGET_NO_WINDOW (bin->child) &&
 313               gtk_widget_intersect (bin->child, &event->area, &child_event.area))
 314             gtk_widget_event (bin->child, (GdkEvent*) &child_event);
 315         }
 316
 317       gtk_widget_draw_focus (widget);
 318     }
 319
 320   return FALSE;
 321 }
 322
 323 static gint
 324 gtk_list_item_focus_in (GtkWidget     *widget,
 325                         GdkEventFocus *event)
 326 {
 327   g_return_val_if_fail (widget != NULL, FALSE);
 328   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 329   g_return_val_if_fail (event != NULL, FALSE);
 330
 331   GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
 332   gtk_widget_draw_focus (widget);
 333
 334   return FALSE;
 335 }
 336
 337 static gint
 338 gtk_list_item_focus_out (GtkWidget     *widget,
 339                          GdkEventFocus *event)
 340 {
 341   g_return_val_if_fail (widget != NULL, FALSE);
 342   g_return_val_if_fail (GTK_IS_LIST_ITEM (widget), FALSE);
 343   g_return_val_if_fail (event != NULL, FALSE);
 344
 345   GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
 346   gtk_widget_draw_focus (widget);
 347
 348   return FALSE;
 349 }
 350
 351 static void
 352 gtk_real_list_item_select (GtkItem *item)
 353 {
 354   g_return_if_fail (item != NULL);
 355   g_return_if_fail (GTK_IS_LIST_ITEM (item));
 356
 357   if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
 358     return;
 359
 360   gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 361   gtk_widget_queue_draw (GTK_WIDGET (item));
 362 }
 363
 364 static void
 365 gtk_real_list_item_deselect (GtkItem *item)
 366 {
 367   g_return_if_fail (item != NULL);
 368   g_return_if_fail (GTK_IS_LIST_ITEM (item));
 369
 370   if (GTK_WIDGET (item)->state == GTK_STATE_NORMAL)
 371     return;
 372
 373   gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
 374   gtk_widget_queue_draw (GTK_WIDGET (item));
 375 }
 376
 377 static void
 378 gtk_real_list_item_toggle (GtkItem *item)
 379 {
 380   g_return_if_fail (item != NULL);
 381   g_return_if_fail (GTK_IS_LIST_ITEM (item));
 382
 383   if (GTK_WIDGET (item)->parent && GTK_IS_LIST (GTK_WIDGET (item)->parent))
 384     gtk_list_select_child (GTK_LIST (GTK_WIDGET (item)->parent),
 385                            GTK_WIDGET (item));
 386   else
 387     {
 388       /* Should we really bother with this bit? A listitem not in a list?
 389        * -Johannes Keukelaar
 390        * yes, always be on the save side!
 391        * -timj
 392        */
 393       if (GTK_WIDGET (item)->state == GTK_STATE_SELECTED)
 394         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_NORMAL);
 395       else
 396         gtk_widget_set_state (GTK_WIDGET (item), GTK_STATE_SELECTED);
 397       gtk_widget_queue_draw (GTK_WIDGET (item));
 398     }
 399 }